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vim-patch:8.2.1909: number of status line items is limited to 80

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Problem:    Number of status line items is limited to 80.
Solution:   Dynamically allocate the arrays. (Rom Grk, closes vim/vim#7181)
8133cc6bf4

The members of stl_item_T have not been prefixed with stl_ contrary to
the vim patch because the amount of stl_ prefixes on single lines of
code in that region was hurtful to readability.
This commit is contained in:
Rom Grk
2020-10-26 18:48:39 -04:00
parent b6897ebc0c
commit 10bf69a43e
9 changed files with 180 additions and 159 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
runtime/doc/options.txt
View File

@@ -5795,7 +5795,7 @@ A jump table for the options with a short description can be found at |Q_op|.
normal text. Each status line item is of the form:
%-0{minwid}.{maxwid}{item}
All fields except the {item} are optional. A single percent sign can
be given as "%%". Up to 80 items can be specified. *E541*
be given as "%%".
When the option starts with "%!" then it is used as an expression,
evaluated and the result is used as the option value. Example: >

233
src/nvim/buffer.c
View File

@@ -3440,31 +3440,17 @@ int build_stl_str_hl(
int use_sandbox,
char_u fillchar,
int maxwidth,
struct stl_hlrec *hltab,
StlClickRecord *tabtab
stl_hlrec_t **hltab,
StlClickRecord **tabtab
)
{
int groupitems[STL_MAX_ITEM];
struct stl_item {
// Where the item starts in the status line output buffer
char_u *start;
// Function to run for ClickFunc items.
char *cmd;
// The minimum width of the item
int minwid;
// The maximum width of the item
int maxwid;
enum {
Normal,
Empty,
Group,
Separate,
Highlight,
TabPage,
ClickFunc,
Trunc
} type;
} items[STL_MAX_ITEM];
static size_t stl_items_len = 20; // Initial value, grows as needed.
static stl_item_t *stl_items = NULL;
static int *stl_groupitems = NULL;
static stl_hlrec_t *stl_hltab = NULL;
static StlClickRecord *stl_tabtab = NULL;
static int *stl_separator_locations = NULL;
#define TMPLEN 70
char_u buf_tmp[TMPLEN];
char_u win_tmp[TMPLEN];
@@ -3472,6 +3458,14 @@ int build_stl_str_hl(
const int save_must_redraw = must_redraw;
const int save_redr_type = curwin->w_redr_type;
if (stl_items == NULL) {
stl_items = xmalloc(sizeof(stl_item_t) * stl_items_len);
stl_groupitems = xmalloc(sizeof(int) * stl_items_len);
stl_hltab = xmalloc(sizeof(stl_hlrec_t) * stl_items_len);
stl_tabtab = xmalloc(sizeof(stl_hlrec_t) * stl_items_len);
stl_separator_locations = xmalloc(sizeof(int) * stl_items_len);
}
// When the format starts with "%!" then evaluate it as an expression and
// use the result as the actual format string.
if (fmt[0] == '%' && fmt[1] == '!') {
@@ -3540,14 +3534,17 @@ int build_stl_str_hl(
// Proceed character by character through the statusline format string
// fmt_p is the current positon in the input buffer
for (char_u *fmt_p = usefmt; *fmt_p; ) {
if (curitem == STL_MAX_ITEM) {
// There are too many items. Add the error code to the statusline
// to give the user a hint about what went wrong.
if (out_p + 5 < out_end_p) {
memmove(out_p, " E541", (size_t)5);
out_p += 5;
}
break;
if (curitem == (int)stl_items_len) {
size_t new_len = stl_items_len * 3 / 2;
stl_items = xrealloc(stl_items, sizeof(stl_item_t) * new_len);
stl_groupitems = xrealloc(stl_groupitems, sizeof(int) * new_len);
stl_hltab = xrealloc(stl_hltab, sizeof(stl_hlrec_t) * new_len);
stl_tabtab = xrealloc(stl_tabtab, sizeof(StlClickRecord) * new_len);
stl_separator_locations =
xrealloc(stl_separator_locations, sizeof(int) * new_len);
stl_items_len = new_len;
}
if (*fmt_p != NUL && *fmt_p != '%') {
@@ -3591,16 +3588,16 @@ int build_stl_str_hl(
if (groupdepth > 0) {
continue;
}
items[curitem].type = Separate;
items[curitem++].start = out_p;
stl_items[curitem].type = Separate;
stl_items[curitem++].start = out_p;
continue;
}
// STL_TRUNCMARK: Where to begin truncating if the statusline is too long.
if (*fmt_p == STL_TRUNCMARK) {
fmt_p++;
items[curitem].type = Trunc;
items[curitem++].start = out_p;
stl_items[curitem].type = Trunc;
stl_items[curitem++].start = out_p;
continue;
}
@@ -3616,7 +3613,7 @@ int build_stl_str_hl(
// Determine how long the group is.
// Note: We set the current output position to null
// so `vim_strsize` will work.
char_u *t = items[groupitems[groupdepth]].start;
char_u *t = stl_items[stl_groupitems[groupdepth]].start;
*out_p = NUL;
long group_len = vim_strsize(t);
@@ -3626,40 +3623,40 @@ int build_stl_str_hl(
// move the output pointer back to where the group started.
// Note: This erases any non-item characters that were in the group.
// Otherwise there would be no reason to do this step.
if (curitem > groupitems[groupdepth] + 1
&& items[groupitems[groupdepth]].minwid == 0) {
if (curitem > stl_groupitems[groupdepth] + 1
&& stl_items[stl_groupitems[groupdepth]].minwid == 0) {
// remove group if all items are empty and highlight group
// doesn't change
int group_start_userhl = 0;
int group_end_userhl = 0;
int n;
for (n = groupitems[groupdepth] - 1; n >= 0; n--) {
if (items[n].type == Highlight) {
group_start_userhl = group_end_userhl = items[n].minwid;
for (n = stl_groupitems[groupdepth] - 1; n >= 0; n--) {
if (stl_items[n].type == Highlight) {
group_start_userhl = group_end_userhl = stl_items[n].minwid;
break;
}
}
for (n = groupitems[groupdepth] + 1; n < curitem; n++) {
if (items[n].type == Normal) {
for (n = stl_groupitems[groupdepth] + 1; n < curitem; n++) {
if (stl_items[n].type == Normal) {
break;
}
if (items[n].type == Highlight) {
group_end_userhl = items[n].minwid;
if (stl_items[n].type == Highlight) {
group_end_userhl = stl_items[n].minwid;
}
}
if (n == curitem && group_start_userhl == group_end_userhl) {
// empty group
out_p = t;
group_len = 0;
for (n = groupitems[groupdepth] + 1; n < curitem; n++) {
for (n = stl_groupitems[groupdepth] + 1; n < curitem; n++) {
// do not use the highlighting from the removed group
if (items[n].type == Highlight) {
items[n].type = Empty;
if (stl_items[n].type == Highlight) {
stl_items[n].type = Empty;
}
// adjust the start position of TabPage to the next
// item position
if (items[n].type == TabPage) {
items[n].start = out_p;
if (stl_items[n].type == TabPage) {
stl_items[n].start = out_p;
}
}
}
@@ -3667,18 +3664,19 @@ int build_stl_str_hl(
// If the group is longer than it is allowed to be
// truncate by removing bytes from the start of the group text.
if (group_len > items[groupitems[groupdepth]].maxwid) {
if (group_len > stl_items[stl_groupitems[groupdepth]].maxwid) {
// { Determine the number of bytes to remove
long n;
if (has_mbyte) {
// Find the first character that should be included.
n = 0;
while (group_len >= items[groupitems[groupdepth]].maxwid) {
while (group_len >= stl_items[stl_groupitems[groupdepth]].maxwid) {
group_len -= ptr2cells(t + n);
n += (*mb_ptr2len)(t + n);
}
} else {
n = (long)(out_p - t) - items[groupitems[groupdepth]].maxwid + 1;
n = (long)(out_p - t)
- stl_items[stl_groupitems[groupdepth]].maxwid + 1;
}
// }
@@ -3689,25 +3687,26 @@ int build_stl_str_hl(
memmove(t + 1, t + n, (size_t)(out_p - (t + n)));
out_p = out_p - n + 1;
// Fill up space left over by half a double-wide char.
while (++group_len < items[groupitems[groupdepth]].minwid) {
while (++group_len < stl_items[stl_groupitems[groupdepth]].minwid) {
*out_p++ = fillchar;
}
// }
// correct the start of the items for the truncation
for (int idx = groupitems[groupdepth] + 1; idx < curitem; idx++) {
for (int idx = stl_groupitems[groupdepth] + 1; idx < curitem; idx++) {
// Shift everything back by the number of removed bytes
items[idx].start -= n;
stl_items[idx].start -= n;
// If the item was partially or completely truncated, set its
// start to the start of the group
if (items[idx].start < t) {
items[idx].start = t;
if (stl_items[idx].start < t) {
stl_items[idx].start = t;
}
}
// If the group is shorter than the minimum width, add padding characters.
} else if (abs(items[groupitems[groupdepth]].minwid) > group_len) {
long min_group_width = items[groupitems[groupdepth]].minwid;
} else if (
abs(stl_items[stl_groupitems[groupdepth]].minwid) > group_len) {
long min_group_width = stl_items[stl_groupitems[groupdepth]].minwid;
// If the group is left-aligned, add characters to the right.
if (min_group_width < 0) {
min_group_width = 0 - min_group_width;
@@ -3726,8 +3725,8 @@ int build_stl_str_hl(
// }
// Adjust item start positions
for (int n = groupitems[groupdepth] + 1; n < curitem; n++) {
items[n].start += group_len;
for (int n = stl_groupitems[groupdepth] + 1; n < curitem; n++) {
stl_items[n].start += group_len;
}
// Prepend the fill characters
@@ -3763,9 +3762,9 @@ int build_stl_str_hl(
// User highlight groups override the min width field
// to denote the styling to use.
if (*fmt_p == STL_USER_HL) {
items[curitem].type = Highlight;
items[curitem].start = out_p;
items[curitem].minwid = minwid > 9 ? 1 : minwid;
stl_items[curitem].type = Highlight;
stl_items[curitem].start = out_p;
stl_items[curitem].minwid = minwid > 9 ? 1 : minwid;
fmt_p++;
curitem++;
continue;
@@ -3799,8 +3798,8 @@ int build_stl_str_hl(
if (minwid == 0) {
// %X ends the close label, go back to the previous tab label nr.
for (long n = curitem - 1; n >= 0; n--) {
if (items[n].type == TabPage && items[n].minwid >= 0) {
minwid = items[n].minwid;
if (stl_items[n].type == TabPage && stl_items[n].minwid >= 0) {
minwid = stl_items[n].minwid;
break;
}
}
@@ -3809,9 +3808,9 @@ int build_stl_str_hl(
minwid = -minwid;
}
}
items[curitem].type = TabPage;
items[curitem].start = out_p;
items[curitem].minwid = minwid;
stl_items[curitem].type = TabPage;
stl_items[curitem].start = out_p;
stl_items[curitem].minwid = minwid;
fmt_p++;
curitem++;
continue;
@@ -3826,10 +3825,10 @@ int build_stl_str_hl(
if (*fmt_p != STL_CLICK_FUNC) {
break;
}
items[curitem].type = ClickFunc;
items[curitem].start = out_p;
items[curitem].cmd = xmemdupz(t, (size_t)(((char *)fmt_p - t)));
items[curitem].minwid = minwid;
stl_items[curitem].type = ClickFunc;
stl_items[curitem].start = out_p;
stl_items[curitem].cmd = xmemdupz(t, (size_t)(((char *)fmt_p - t)));
stl_items[curitem].minwid = minwid;
fmt_p++;
curitem++;
continue;
@@ -3850,11 +3849,11 @@ int build_stl_str_hl(
// Denotes the start of a new group
if (*fmt_p == '(') {
groupitems[groupdepth++] = curitem;
items[curitem].type = Group;
items[curitem].start = out_p;
items[curitem].minwid = minwid;
items[curitem].maxwid = maxwid;
stl_groupitems[groupdepth++] = curitem;
stl_items[curitem].type = Group;
stl_items[curitem].start = out_p;
stl_items[curitem].minwid = minwid;
stl_items[curitem].maxwid = maxwid;
fmt_p++;
curitem++;
continue;
@@ -4149,9 +4148,9 @@ int build_stl_str_hl(
// Create a highlight item based on the name
if (*fmt_p == '#') {
items[curitem].type = Highlight;
items[curitem].start = out_p;
items[curitem].minwid = -syn_namen2id(t, (int)(fmt_p - t));
stl_items[curitem].type = Highlight;
stl_items[curitem].start = out_p;
stl_items[curitem].minwid = -syn_namen2id(t, (int)(fmt_p - t));
curitem++;
fmt_p++;
}
@@ -4162,8 +4161,8 @@ int build_stl_str_hl(
// If we made it this far, the item is normal and starts at
// our current position in the output buffer.
// Non-normal items would have `continued`.
items[curitem].start = out_p;
items[curitem].type = Normal;
stl_items[curitem].start = out_p;
stl_items[curitem].type = Normal;
// Copy the item string into the output buffer
if (str != NULL && *str) {
@@ -4321,7 +4320,7 @@ int build_stl_str_hl(
// Otherwise, there was nothing to print so mark the item as empty
} else {
items[curitem].type = Empty;
stl_items[curitem].type = Empty;
}
// Only free the string buffer if we allocated it.
@@ -4362,13 +4361,13 @@ int build_stl_str_hl(
// Otherwise, look for the truncation item
} else {
// Default to truncating at the first item
trunc_p = items[0].start;
trunc_p = stl_items[0].start;
item_idx = 0;
for (int i = 0; i < itemcnt; i++) {
if (items[i].type == Trunc) {
// Truncate at %< items.
trunc_p = items[i].start;
if (stl_items[i].type == Trunc) {
// Truncate at %< stl_items.
trunc_p = stl_items[i].start;
item_idx = i;
break;
}
@@ -4403,7 +4402,7 @@ int build_stl_str_hl(
// Ignore any items in the statusline that occur after
// the truncation point
for (int i = 0; i < itemcnt; i++) {
if (items[i].start > trunc_p) {
if (stl_items[i].start > trunc_p) {
itemcnt = i;
break;
}
@@ -4458,12 +4457,12 @@ int build_stl_str_hl(
for (int i = item_idx; i < itemcnt; i++) {
// Items starting at or after the end of the truncated section need
// to be moved backwards.
if (items[i].start >= trunc_end_p) {
items[i].start -= item_offset;
if (stl_items[i].start >= trunc_end_p) {
stl_items[i].start -= item_offset;
// Anything inside the truncated area is set to start
// at the `<` truncation character.
} else {
items[i].start = trunc_p;
stl_items[i].start = trunc_p;
}
}
// }
@@ -4479,7 +4478,7 @@ int build_stl_str_hl(
// figuring out how many groups there are.
int num_separators = 0;
for (int i = 0; i < itemcnt; i++) {
if (items[i].type == Separate) {
if (stl_items[i].type == Separate) {
num_separators++;
}
}
@@ -4488,11 +4487,10 @@ int build_stl_str_hl(
if (num_separators) {
// Create an array of the start location for each
// separator mark.
int separator_locations[STL_MAX_ITEM];
int index = 0;
for (int i = 0; i < itemcnt; i++) {
if (items[i].type == Separate) {
separator_locations[index] = i;
if (stl_items[i].type == Separate) {
stl_separator_locations[index] = i;
index++;
}
}
@@ -4504,16 +4502,17 @@ int build_stl_str_hl(
for (int i = 0; i < num_separators; i++) {
int dislocation = (i == (num_separators - 1))
? final_spaces : standard_spaces;
char_u *seploc = items[separator_locations[i]].start + dislocation;
STRMOVE(seploc, items[separator_locations[i]].start);
for (char_u *s = items[separator_locations[i]].start; s < seploc; s++) {
char_u *start = stl_items[stl_separator_locations[i]].start;
char_u *seploc = start + dislocation;
STRMOVE(seploc, start);
for (char_u *s = start; s < seploc; s++) {
*s = fillchar;
}
for (int item_idx = separator_locations[i] + 1;
for (int item_idx = stl_separator_locations[i] + 1;
item_idx < itemcnt;
item_idx++) {
items[item_idx].start += dislocation;
stl_items[item_idx].start += dislocation;
}
}
@@ -4523,11 +4522,12 @@ int build_stl_str_hl(
// Store the info about highlighting.
if (hltab != NULL) {
struct stl_hlrec *sp = hltab;
*hltab = stl_hltab;
stl_hlrec_t *sp = stl_hltab;
for (long l = 0; l < itemcnt; l++) {
if (items[l].type == Highlight) {
sp->start = items[l].start;
sp->userhl = items[l].minwid;
if (stl_items[l].type == Highlight) {
sp->start = stl_items[l].start;
sp->userhl = stl_items[l].minwid;
sp++;
}
}
@@ -4537,16 +4537,17 @@ int build_stl_str_hl(
// Store the info about tab pages labels.
if (tabtab != NULL) {
StlClickRecord *cur_tab_rec = tabtab;
*tabtab = stl_tabtab;
StlClickRecord *cur_tab_rec = stl_tabtab;
for (long l = 0; l < itemcnt; l++) {
if (items[l].type == TabPage) {
cur_tab_rec->start = (char *)items[l].start;
if (items[l].minwid == 0) {
if (stl_items[l].type == TabPage) {
cur_tab_rec->start = (char *)stl_items[l].start;
if (stl_items[l].minwid == 0) {
cur_tab_rec->def.type = kStlClickDisabled;
cur_tab_rec->def.tabnr = 0;
} else {
int tabnr = items[l].minwid;
if (items[l].minwid > 0) {
int tabnr = stl_items[l].minwid;
if (stl_items[l].minwid > 0) {
cur_tab_rec->def.type = kStlClickTabSwitch;
} else {
cur_tab_rec->def.type = kStlClickTabClose;
@@ -4556,11 +4557,11 @@ int build_stl_str_hl(
}
cur_tab_rec->def.func = NULL;
cur_tab_rec++;
} else if (items[l].type == ClickFunc) {
cur_tab_rec->start = (char *)items[l].start;
} else if (stl_items[l].type == ClickFunc) {
cur_tab_rec->start = (char *)stl_items[l].start;
cur_tab_rec->def.type = kStlClickFuncRun;
cur_tab_rec->def.tabnr = items[l].minwid;
cur_tab_rec->def.func = items[l].cmd;
cur_tab_rec->def.tabnr = stl_items[l].minwid;
cur_tab_rec->def.func = stl_items[l].cmd;
cur_tab_rec++;
}
}

28
src/nvim/buffer_defs.h
View File

@@ -361,14 +361,36 @@ struct mapblock {
sctx_T m_script_ctx; // SCTX where map was defined
};
/*
* Used for highlighting in the status line.
*/
/// Used for highlighting in the status line.
typedef struct stl_hlrec stl_hlrec_t;
struct stl_hlrec {
char_u *start;
int userhl; // 0: no HL, 1-9: User HL, < 0 for syn ID
};
/// Used for building the status line.
typedef struct stl_item stl_item_t;
struct stl_item {
// Where the item starts in the status line output buffer
char_u *start;
// Function to run for ClickFunc items.
char *cmd;
// The minimum width of the item
int minwid;
// The maximum width of the item
int maxwid;
enum {
Normal,
Empty,
Group,
Separate,
Highlight,
TabPage,
ClickFunc,
Trunc
} type;
};
// values for b_syn_spell: what to do with toplevel text
#define SYNSPL_DEFAULT 0 // spell check if @Spell not defined
#define SYNSPL_TOP 1 // spell check toplevel text

9
src/nvim/option.c
View File

@@ -3751,11 +3751,10 @@ static char_u *set_chars_option(win_T *wp, char_u **varp, bool set)
/// Return error message or NULL.
char_u *check_stl_option(char_u *s)
{
int itemcnt = 0;
int groupdepth = 0;
static char_u errbuf[80];
while (*s && itemcnt < STL_MAX_ITEM) {
while (*s) {
// Check for valid keys after % sequences
while (*s && *s != '%') {
s++;
@@ -3764,9 +3763,6 @@ char_u *check_stl_option(char_u *s)
break;
}
s++;
if (*s != '%' && *s != ')') {
itemcnt++;
}
if (*s == '%' || *s == STL_TRUNCMARK || *s == STL_SEPARATE) {
s++;
continue;
@@ -3808,9 +3804,6 @@ char_u *check_stl_option(char_u *s)
}
}
}
if (itemcnt >= STL_MAX_ITEM) {
return (char_u *)N_("E541: too many items");
}
if (groupdepth != 0) {
return (char_u *)N_("E542: unbalanced groups");
}

10
src/nvim/screen.c
View File

@@ -5191,8 +5191,8 @@ win_redr_custom (
char_u buf[MAXPATHL];
char_u *stl;
char_u *p;
struct stl_hlrec hltab[STL_MAX_ITEM];
StlClickRecord tabtab[STL_MAX_ITEM];
stl_hlrec_t *hltab;
StlClickRecord *tabtab;
int use_sandbox = false;
win_T *ewp;
int p_crb_save;
@@ -5270,9 +5270,9 @@ win_redr_custom (
/* Make a copy, because the statusline may include a function call that
* might change the option value and free the memory. */
stl = vim_strsave(stl);
width = build_stl_str_hl(ewp, buf, sizeof(buf),
stl, use_sandbox,
fillchar, maxwidth, hltab, tabtab);
width =
build_stl_str_hl(ewp, buf, sizeof(buf), stl, use_sandbox,
fillchar, maxwidth, &hltab, &tabtab);
xfree(stl);
ewp->w_p_crb = p_crb_save;

1
src/nvim/testdir/test_options.vim
View File

@@ -267,7 +267,6 @@ func Test_set_errors()
call assert_fails('set commentstring=x', 'E537:')
call assert_fails('set complete=x', 'E539:')
call assert_fails('set statusline=%{', 'E540:')
call assert_fails('set statusline=' . repeat("%p", 81), 'E541:')
call assert_fails('set statusline=%(', 'E542:')
if has('cursorshape')
" This invalid value for 'guicursor' used to cause Vim to crash.

15
src/nvim/testdir/test_statusline.vim
View File

@@ -354,6 +354,21 @@ func Test_statusline()
delfunc GetNested
delfunc GetStatusLine
" Test statusline works with 80+ items
function! StatusLabel()
redrawstatus
return '[label]'
endfunc
let statusline = '%{StatusLabel()}'
for i in range(150)
let statusline .= '%#TabLine' . (i % 2 == 0 ? 'Fill' : 'Sel') . '#' . string(i)[0]
endfor
let &statusline = statusline
redrawstatus
set statusline&
delfunc StatusLabel
" Check statusline in current and non-current window
" with the 'fillchars' option.
set fillchars=stl:^,stlnc:=,vert:\|,fold:-,diff:-

1
src/nvim/vim.h
View File

@@ -259,7 +259,6 @@ enum { FOLD_TEXT_LEN = 51 }; //!< buffer size for get_foldtext()
#define PERROR(msg) (void) emsgf("%s: %s", msg, strerror(errno))
#define SHOWCMD_COLS 10 // columns needed by shown command
#define STL_MAX_ITEM 80 // max nr of %<flag> in statusline
#include "nvim/path.h"

40
test/unit/buffer_spec.lua
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@@ -212,7 +212,7 @@ describe('buffer functions', function()
describe('build_stl_str_hl', function()
local buffer_byte_size = 100
local STL_MAX_ITEM = 80
local STL_INITIAL_ITEMS = 20
local output_buffer = ''
-- This function builds the statusline
@@ -431,31 +431,23 @@ describe('buffer functions', function()
'aaaa%=b%=c%=d%=e%=fg%=hi%=jk%=lmnop%=qrstuv%=wxyz',
'aaaa b c d e fg hi jk lmnop qrstuv wxyz')
-- maximum stl item testing
statusline_test('should handle a much larger amount of = than buffer locations', 20,
('%='):rep(STL_MAX_ITEM - 1),
' ') -- Should be fine, because within limit
statusline_test('should handle a much larger amount of = than stl max item', 20,
('%='):rep(STL_MAX_ITEM + 1),
' E541') -- Should show the VIM error
-- stl item testing
local tabline = ''
for i= 1, 1000 do
tabline = tabline .. (i % 2 == 0 and '%#TabLineSel#' or '%#TabLineFill#') .. tostring(i % 2)
end
statusline_test('should handle a large amount of any items', 20,
tabline,
'<1010101010101010101') -- Should not show any error
statusline_test('should handle a larger amount of = than stl initial item', 20,
('%='):rep(STL_INITIAL_ITEMS * 5),
' ') -- Should not show any error
statusline_test('should handle many extra characters', 20,
'a' .. ('a'):rep(STL_MAX_ITEM * 4),
'<aaaaaaaaaaaaaaaaaaa') -- Does not show the error because there are no items
statusline_test('should handle almost maximum of characters and flags', 20,
'a' .. ('%=a'):rep(STL_MAX_ITEM - 1),
'a<aaaaaaaaaaaaaaaaaa') -- Should not show the VIM error
'a' .. ('a'):rep(STL_INITIAL_ITEMS * 5),
'<aaaaaaaaaaaaaaaaaaa') -- Does not show any error
statusline_test('should handle many extra characters and flags', 20,
'a' .. ('%=a'):rep(STL_MAX_ITEM),
'a<aaaaaaaaaaaaa E541') -- Should show the VIM error
statusline_test('should handle many extra characters and flags', 20,
'a' .. ('%=a'):rep(STL_MAX_ITEM * 2),
'a<aaaaaaaaaaaaa E541') -- Should show the VIM error
statusline_test('should handle many extra characters and flags with truncation', 20,
'aaa%<' .. ('%=a'):rep(STL_MAX_ITEM),
'aaa<aaaaaaaaaaa E541') -- Should show the VIM error
statusline_test('should handle many characters and flags before and after truncation', 20,
'a%=a%=a%<' .. ('%=a'):rep(STL_MAX_ITEM),
'aaa<aaaaaaaaaaa E541') -- Should show the VIM error
'a' .. ('%=a'):rep(STL_INITIAL_ITEMS * 2),
'a<aaaaaaaaaaaaaaaaaa') -- Should not show any error
-- multi-byte testing